Speeds via WiFi on my Max BR1 LTE are significantly slower via Wireless than via ethernet. This occurs on both 4G and Xfinity WiFi. Even just a couple of feet from the router performance is extremely slower over WiFi. Have tested several devices and performance difference is consistent. I can understand a slight speed difference, but what I am experiencing is extreme. I updated to most recent firmware 8.0, and no change. Any suggestions how to improve Wifi throughput?